| Company | Timeline | Status | |
| Quad Design Limited Secretary • Architect | 1 Oct 1996←29 Years→Current | Active | |
| Quad Design Limited Secretary • Architect | 1 Oct 1996←25 Years→31 Mar 2022 | Active | |
| Quad Design Limited Director • Architect | 20 Jun 1992←33 Years→Current | Active | |
